Seal for bung fixtures



Sept. 27, 1932. H. RIEKE SEAL FOR BUNG FIXTURES Filed Nov. 2, 1929 JI/r- L XI INVJ-ENTOR.

A TTORNEY.

Fatented Sept. 27, 1932 UNITED STATES TRVIN H. RIEKE, OF

PATENT OFFICE AUBURN, INDIANA, ASSIGNOR TO RIEKE META]: PRODUCTS COB- IPOBATION, A CORPORATION OF INDIANA I SEAL FOR BEING FIXTURES Application filed November 2, 1929. Seriai No. 404,300.

This invention relates to improvements in seals for bung fixtures, the object thereof being to provide, in connection with the bung ring of a container, a seal for closing the a inner end thereof so that withdrawal of the contents of the container through the bung opening without first breaking the seal is prevented. Another object is toprovide a seal for a hung ring so initially formedthat its in marginal edge becomes permanently secured in} the clinched end of the bung ring when said ring is [installed in the wall of a container. L

These objects are accomplished by the construction illustrated in the accompanying drawing, in which Fig. 1 is a vertical section showing a bung ring inserted in the bung ,opening made in the wall of the container, with the seal apm plied thereto, the'ring and seal" appearing in their initial forms preparatory to the op eration by which they are clinched permanently in place;

Fig. 2 is a similar view showing the ring and seal clinched in place; and

Fig. 3 is a plan view of the seal in its initial form. 4

A preferred form of the invention, as

shown in the drawing, is applicable to that.

m type of bungv ring 1 that is ressed in to secure it fixedly in the wall 2 o a sheet metal container (not shown), which wall is perforated and shaped so that a tube 3 is formed about the orificein the wall for the recep- 3 tion of the sleeve 4 of the ring. The sleeve is internally screw threaded part way from its, upper end, while its lower end portion 4L, initially extendsdownwardly into the container beyond theend of the tube 3.

The seal 5 is preferably made of thin sheet metal, and is of circular r'orm, the marginal portion thereof having an annular groove 6 bounded internally by a wall 7 and externally by a wall 8 concentric therewith;

The seal thus formed is applied to the extending end 4: so that the lowermost terminal of the ring is disposed within the groove 6 between said walls 7 and 8. Pressure is m then applied to the ring and said walls of the a seal, by means of suitable dies (not shown),

closing the inner end of said rin gglthe lower:

so that the thin extending portion 4 01 the ring and the wall 8 of the seal are clinched externally about the lower end of the tube 3 v and thus permanently securing the ring and the seal in connection with the wall 2 of the container as shown in Fig. 2. a

The seal when thus secured in place closes the inner end of the ring and prevents tamporing with the contents of the container unpose, which is permanently sealed or. closed in any well known manner after the container has been initially charged with the material'to be shipped, and thus removal of the material from the container other than through the bung ring is prevented. The presence of the seal, unbroken, at the lower end of the bung ring, upon removal ofthe bung, indicates to the receiver of the container that the content originally shipped therein is genuine.

I claim: v

1. A bung fixture and seal therefor comprising a container wall having an orifice and provided with a tube upon the inner sideof the wall-surrounding said orifice, a hung ring having. a sleeve extending through said orifice and tube, and a breakable seal" end ofsaid ring and the marginal portion of said seal being clinched together around at p the lower end of said tube whereby the sleeve,

tube and seal are conjoined at the lower end of the tube whereby to permit'insertion and removal 9f a hung in said ring without disturbance of said seal.

2. In a'bung fixture for a container, a con-- tainerhwall formed with an orifice and conti guous tube extending inwardly about said orifice, a bung ring having a sleeve extending axially through the tube, and a breakable seal, the lower end of said rin and-the marginal portion of said sealv eing clinched 1 about the lower end of said tube with the marginal portion of said seal disposed between the clinched portion of the sleeve and exterior of the tube, whereby the ring, seal and tube are conjoined at the lower end of the tube.

In testimony whereof I afiix my signature.

IRVTN H. RIEKE. 

